What is another word for "film"?

Roget's Thesaurus (1911) lists these synonyms for "film": bed, board, cloud, cloudiness, cloudy, coat, course, cover, covering, cut, dess, dim, dirty, escarpment, eschar, flag, flagstone, flake, floor, fog, foggy, foil, frosted, fuliginous, fumid, gauze, haze, haziness, hazy, impervious, instrument, integument, jewel, lamella, lamina, layer, leaf, light, measure, membrane.